SQLRowCount() Retruning -1 For A SELECT Statement.
Nov 15, 2007
Hi friends,
I am facing problem with SQLRowCount() function which is returning -1 when I tried to fetch records greater than 99 from my data file. if the data file contains total of 99 records then the above function is returning its second parameter value nRowCount as 99 but if dat file contains 100 records then it is returning nRowCount as -1
Please tell me whether it is a driver specic error or some thing else. I am using a ODBC driver for a database called MYOB.
Below are the SQL APIs I used in my code.
if (SQLExecDirect(m_StmtHandle, (PUCHAR)sExecuteStatement.c_str(), SQL_NTS) != SQL_SUCCESS) return false;
if (SQLRowCount(m_StmtHandle,&nRowCount) != SQL_SUCCESS) return false;
The string 'sExecuteStatement' in SQLExecDirect() function above is carrying a Select query.
Its an unpredictable error because the function fails to return exact row count for 100 records, but it is working fine with 99 records.
I am not using any kind of array with size of 99 or 100 in my code.
What I want to know is:
1. Can I use SQLRowCount() with SELECT statement, If not what is the alternative.
2. Is this a driver specific error?.
3. Can I use SQL_DIAG_ROW_COUNT instead of SQLRowCount? If Yes, How to use it?.
Your help will be greatly appriciated if you give me a piece of code for this issue.
Hi friends, I am facing problem with SQLRowCount() function which is returning -1 when I tried to fetch records greater than 99 from my data file. if the data file contains total of 99 records then the above function is returning its second parameter value nRowCount as 99 but if dat file contains 100 records then it is returning nRowCount as -1 Please tell me whether it is a driver specic error or some thing else. I am using a ODBC driver for a database called MYOB.
Below is the piece of code that I used for fetching records.
if (SQLExecDirect(m_StmtHandle, (PUCHAR)sExecuteStatement.c_str(), SQL_NTS) != SQL_SUCCESS) return false;
if (SQLNumResultCols(m_StmtHandle,(SQLSMALLINT *) &nColumnCount) != SQL_SUCCESS) return false;
if (SQLRowCount(m_StmtHandle,&nRowCount) != SQL_SUCCESS) return false;
The string 'sExecuteStatement' in SQLExecDirect() function above is carrying a Select query that fetch 100 records.
Its strange that the function fails to return exact row count for 100 records, but it is working fine with 99 records.
I ma not using any kind of array with size of 99 or 100 in my code.
What I want to know is whether I can use SQLRowCount() with SELECT statement, If not what is the alternative.
Hi friends, I am facing problem with SQLRowCount() function which is returning -1 when I tried to fetch records greater than 99 from my data file. if the data file contains total of 99 records then the above function is returning its second parameter value nRowCount as 99 but if dat file contains 100 records then it is returning nRowCount as -1 Please tell me whether it is a driver specic error or some thing else. I am using a ODBC driver for a database called MYOB.
Below is the piece of code that I used for fetching records.
if (SQLExecDirect(m_StmtHandle, (PUCHAR)sExecuteStatement.c_str(), SQL_NTS) != SQL_SUCCESS) return false;
if (SQLNumResultCols(m_StmtHandle,(SQLSMALLINT *) &nColumnCount) != SQL_SUCCESS) return false;
if (SQLRowCount(m_StmtHandle,&nRowCount) != SQL_SUCCESS) return false;
The string 'sExecuteStatement' in SQLExecDirect() function above is carrying a Select query.
Its an unpredictable error because the function fails to return exact row count for 100 records, but it is working fine with 99 records.
I am not using any kind of array with size of 99 or 100 in my code.
What I want to know is: 1. Can I use SQLRowCount() with SELECT statement, If not what is the alternative. 2. Is this a driver specific error?. 3. Can I use SQL_DIAG_ROW_COUNT instead of SQLRowCount? If Yes, How to use it?.
Your help will be greatly appriciated if you give me a piece of code for this issue.
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The results are just as I need:
Field01 Field02
------------- ----------------------
192473 8461760
192474 22810
Because other reasons. I need to modify that query to:
Code Block SELECT DISTINCT Field01 AS 'Field01', Field02 AS 'Field02' INTO AuxiliaryTable FROM myTables WHERE Conditions are true ORDER BY Field01 SELECT DISTINCT [Field02] FROM AuxTable The the results are:
Field02
----------------------
22810 8461760
And what I need is (without showing any other field):
Field02
----------------------
8461760 22810
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